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|
AVG |
No. of Teeth |
Point |
Body |
Taper-bore |
Taper |
Cutting | ||
|
Outside |
Inside |
Middle | ||||||
|
6″ |
4 |
4 |
8 |
2.0～3.25 |
67.724 |
58.196 |
1∶24 |
9.5 |
|
7.5″ |
5 |
5 |
10 |
2.0～4.25 |
85.852 |
58.196 |
1∶24 |
12.7 |
|
9″ |
6 |
6 |
12 |
2.0～5.5 |
104.902 |
58.196 |
1∶24 |
14.2 |
|
12″ |
8 |
8 |
16 |
2.0～6.5 |
140.462 |
126.96 |
1∶24 |
19.4 |
|
16″ |
10 |
10 |
20 |
2.0～6.5 |
188 |
126.96 |
1∶24 |
25.4 |
|
18″ |
6 |
6 |
12 |
2.0～6.5 |
210 |
215.8 |
— |
25.8 |
|
8 |
8 |
16 | ||||||
